API 5L X70 PSL2 is a specification for line pipe steel used in oil and gas transportation systems. Here are some key points regarding the API 5L X70 PSL2 specification:
Grade: API 5L X70 PSL2 refers to the steel grade X70 with enhanced performance requirements according to the PSL2 (Product Specification Level 2) standard.
Chemical Composition:
Carbon: Maximum 0.22%
Manganese: Maximum 1.65%
Phosphorus: Maximum 0.025%
Sulfur: Maximum 0.015%
Silicon: Maximum 0.45%
Niobium: Maximum 0.10%
Vanadium: Maximum 0.10%
Mechanical Properties:
Yield Strength: Minimum 485 MPa (70,300 psi)
Tensile Strength: Minimum 570 MPa (82,700 psi)
Elongation: Minimum 17%
Charpy V-notch impact testing at temperatures as per the standard
Impact Testing Requirements:
Charpy V-notch impact testing is conducted at specified temperatures to ensure the material's toughness in different conditions.
Manufacturing Process:
The steel is typically produced through hot rolling or cold drawing processes to meet the specified chemical composition and mechanical properties.
Applications:
API 5L X70 PSL2 is commonly used in pipelines for transporting oil, gas, and water under high pressure and in harsh environments.
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